K&N off-road replacement air filters are ideal for extended use in dirty and dusty off-road riding and provide clean carburetion even at high altitude. Generally, no jet changes are required with just a K&N filter element. K&N replacement air filters are washable and reusable and provide high air-flow with excellent filtration.

K&N KT-4511XD Replacement Air Filter Product Reviews

The filter did not fit my 2012 KTM 250 SX-F (EU) initially. I had to trim some of the moulding away from the inside of my air box to make it sit flush. After a long dusty ride there was no sign that the filter was compromised.